exile in Palermo. The Sicilian nobles welcomed British military intervention during this period and a new constitution was developed specifically for Sicily based on the Westminster model of government - in that a two-chamber parliament was formed (instead of the three of the existing one). The formation of the parliament brought the end of feudalism in the Kingdom. The British were committed to preserving the security of the Kingdom of Sicily so as to keep Mediterranean sea routes open against the French. The British dispatched several expeditions of troops between 1806 and 1815 and built strong fortifications around Messina. Kingdom of the Two Sicilies The Kingdoms of Naples and Sicily were officially merged in 1816 by Ferdinand I to form the Kingdom of the Two Sicilies. The accession of Ferdinand II as king of the Two Sicilies in 1830 was hailed by Sicilians; they dreamed that autonomy would be returned to the island and the problems of poverty and maladministration of justice would be tackled by the count of Syracuse, the king's brother and lieutenant in Sicily. The royal government in Naples saw the problem of Sicily as being purely administrative, a question of making existing institutions function properly. Neapolitan ministers had no interest in serious reforms. Ferdinand's failure, leading to disillusion and the revolt of 1837, was due mainly to his making no attempt to gain support in the Sicilian middle class, with which he could have faced the power of the baronage. Simmering discontent with Bourbon rule and hopes of Sicilian independence led to major revolts in 1820 and 1848 against Bourbon denial of constitutional government. The 1848 revolution resulted in a sixteen-month period of independence from the Bourbons before its armed forces took back control of the island on 15 May 1849. The city of Messina long harbored proponents of independence throughout the 19th century, and its urban Risorgimento leaders arose out of a diverse milieu comprising artisans, workers, students, clerics, Masons, and sons of English, Irish, and other settlers. The 1847-48 unrest enjoyed wide support in Messina and produced an organized structure, and consciousness of the need to link the struggle to the whole of Sicily. The insurgents briefly gained control of the city but, despite bitter resistance, the Bourbon army was victorious and suppressed the revolt. This suppression resulted in further oppression, created a diaspora of Messinian and Sicilian revolutionaries outside Sicily and locked Sicily